Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,...
Patent
1974-12-27
1976-11-23
DiPalma, Victor A.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
292075R, 29410, 2420513C, 83 1, 83303, 264285, 264288, B29C 1702, B29D 724
Patent
active
039937240
ABSTRACT:
For the manufacture of a continuous coupling element of zigzag or meandering type, a blank strip of sheetlike material is first cut by rotary cutters into a continuous rodlike member of zigzag configuration. This zigzagging rodlike member is reshaped, as by a cooperative pair of forming dies, into meandering configuration in which the major transverse portions of the rodlike member are arranged parallel to each other with constant longitudinal spacings. Pressure is then applied centrally to each transverse portion of the meandering rodlike member to form a pair of lateral protuberances for use as a coupling head in the completed coupling element, and these transverse portions are bent by a combination guide channel-toothed wheel into the shape of a "U".
REFERENCES:
patent: 2919482 (1960-01-01), Casson
patent: 3063120 (1962-11-01), Steingrubner
patent: 3086246 (1963-04-01), Stone
patent: 3267514 (1966-08-01), Porepp
patent: 3336640 (1967-08-01), Chery
patent: 3503289 (1970-03-01), Friberg
patent: 3548694 (1970-12-01), Gelardi
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